Shaker for vacuum cleaner filters



\ FIP7902 0R 2.122.199 Search R0041 y 5, 1938. w. LEATHERS 2,122,799

SHAKER FOR VACUUM CLEANER FILTERS I Filed Feb. 24, 1936 Search Room Patented July 5, 1938 SHAKER FOR VACUUM CLEANER FILTERS Ward Leathers, Haworth, N. J., assignor to Quadrex Corporation, New York, N. Y., a corporation of Delaware Application February 24, 1936, Serial No. 65,392

1 Claim. (01. 183-58) The general object of my invention is to produce an improved, light-weight suction-cleaning device for vacuum cleaner purposes. It refers to filter for same, and especially to those most tacle at 6. A solid but flexibly mounted cap 8 is suitably joined to the top of the filter I. It is free to move a limited distance longitudinally on the handle 2 and provided with an air and dirt 5 applicable to the type of vacuum cleaner having seal I0, such as a felt washer. A pin II through 5 a motor-suction-unit rigid with the handle therethe handle 2 supports a spring I2 surrounding the of. It has to do particularly with the type of handle which forces the cap 8 upward on the filter which surrounds the handle, both encased handle holding the filter I taut and cylindrical. and uncovered, and provides a practical means On the side of the filter I is a projecting shaker 10 of cleaning the filter before the dirt receptacle tabor handle I5. This tab may be made of a 10 is removed for emptying. loop of flexible material such as woven tape, as

Where filters are used in conjunction with shown in Figure 3. Stitching I6 may make of removable dirt receptacles, and particularly this tape, a firm loop. The wings I! may then where they are substantially concentric with the be joined to the filter fabric as by sewing.

handle and motor axis of a vacuum cleaner, rela- Where the filter I is made of double material. 15 tively small filter areas are available and it is see Figure 3, as for example, with normally efilhighly desirable that means be provided whereby cient filter material on the inside and an exthey may be manually shaken before the dirt ceptionally porous material 2| on the outside receptacle is emptied. This is especially true used for decorative orprotective purposes, it is 20 in the type of filter which surrounds the handle essential that the two pieces of fabric be firmly 20 as shown in my co-pending application No. 65,395 joined together adjacent to the attachment of the now Pat. No. 2,083,914, June 15, 1937, and 65,398 shaker I5, or that the shake tab I5 itself be now Pat. No. 2,083,915, June 15, 1937, as well asin passed through the outer material and joined to the type of machine which may present a somethe inner material as by sewing the wings I! what similar external form but in which there is thereto. 5 no handle inside the filter as shown in my 00- In operation it is found that it is highly desirpending application for Letters Patent No. 65,397 able to press downward on the top cap 8 in order now Pat. No. 2,090,453, Aug. 17, 1937. to obtain sufilcient movement for snappy shak- Where the filter fabric is exposed, it is desirable ing with the shaker tab. This cooperative functhat the filter top be yieldable and, in this case, tion accomplishes a very satisfactory cleansing of 30 a shaking mechanism as herewith shown works the interior of the filter-a. most desirable operain conjunction with said yieldable top. tion immediately before emptying the dirt recep- In order to set forth my invention so that tacle 6. those familiar with these arts may understand, Having set forth my invention in a form re- I have prepared this specification and appended duced to mechanical practice it should be under- 35 drawing hereto of which:- stood that there are many types of construction Figure 1 is a partially sectioned side view of familiar to those versed in these arts which acan exposed filter with shaker. complish the same purpose without departing Figure 2 is a side-view of a vacuum cleaner to from the spirit of my invention. 40 which this invention is applied. I claim: 40

Figure 3 is a detail of the shaker tab. In a vacuum cleaner, a handle, a filtering sleeve A substantially cylindrical porous filter I, Fig. 1, substantially concentric with said handle, a cap preferably of filtering fabric, surrounds a handle for said filtering sleeve yieldably joined to said 2 passing through the filter of avacuum cleaner handle, a part projecting from the side of said (as fully shown in Figure 2). The filter is fassleeve and joined thereto, and with said yieldable 4,5

tened peripherally as by a clamping ring 4 to a filter holder 3 rigidly joined to the handle 2. A dirt laden air inlet is shown at 5 and a dirt recepcap and said projecting part operably related for shaking said filter for cleaning purposes.

WARD LEATHERB. 

